

🔐 Secure your space with style and strength — don’t get locked out of peace of mind!
The Master Lock 517D is a heavy-duty laminated padlock featuring a 1.85-inch wide steel body and a cut-resistant adjustable shackle ranging from 2.75 to 5.375 inches. Designed for outdoor use on gates, fences, and sheds, it incorporates a warded locking mechanism to reduce jamming from dirt and grime. Finished in polished alloy steel and backed by a limited lifetime warranty, this lock offers flexible, reliable security trusted by professionals and homeowners alike.

| ASIN | B00004SQL3 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #26,804 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #56 in Keyed Padlocks |
| Brand | Master Lock |
| Color | Silver |
| Control Method | App |
| Controller Type | Hand Control |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,967) |
| Date First Available | January 1, 2008 |
| Finish | Polished |
| Finish Type | Polished |
| Global Trade Identification Number | 00071649437007 |
| Included Components | Unit^Instruction Guide |
| Is Discontinued By Manufacturer | Yes |
| Item Package Quantity | 1 |
| Item Weight | 10.6 ounces |
| Item dimensions L x W x H | 0.2 x 1.73 x 4.76 inches |
| Item model number | 517D |
| Lock Type | Keyed Lock |
| Manufacturer | Master Lock |
| Material | Alloy Steel |
| Measurement System | Metric |
| Model Name | 517D |
| Number of Pieces | 1 |
| Part Number | 517D |
| Product Dimensions | 0.2 x 1.73 x 4.76 inches |
| Recommended Uses For Product | Gate |
| Shape | Irregular |
| Size | 1.85" wide |
| Special Feature | Keyless |
| Special Features | Keyless |
| Style | Long Shackle |
| UPC | 071649437007 |
| Warranty Description | Limited Lifetime Warranty |
A**S
Perfect for my closet
Works well. I've seen some complaints from some people. I have many people help me with this lock because I have problems with my hands right now. If you have thick hands you may find it difficult putting in the key to turn it to pull out the head of the latch if you pushed it all the way to the end when locking it. If you have fake nails as well, however in both instances they can open it just takes longer to maneuver. Other than that is a strong lock. Ensure the master black end is to the end of the extended latch otherwise if you lock it backwards and don't pull it out before you realize it clicks lock, you need to break it as there will be no space to enter the key the opposite way to open it. I've had this lock since August 2025 using it 5x a week.
D**U
Master lock. Piece of mind.
I always pick Master locks, and always pick quality.
C**.
Keys worked, both of them. Perfect size
Can't go wrong with a pad lock that comes with two working keys. Perfect for what I need it for.
D**B
Works Fine
I bought this to use as practice for a residential/commercial locksmithing class that I took. It works fine.
V**T
Great size, durable
Works perfectly. Strong quality keeping our stuff safe. With ease of mind, great long dimension for my needs
O**R
Me gusta mucho porque donde colocas la llave tiene un tipo de juego es como una tapita adicional y eso mismo protege la abertura de la cerradura.
R**E
a great deal !!
two keys included
S**R
Perfect Fit
I needed an outdoor lock for a resin storage box. The other locks had necks that were too short and too thick. This lock was a perfect fit and is secure.
L**S
Perfecto
S**É
un excellent petit cadenas que je viens de recevoir tantot .je suis contente .
M**I
Very useful for cupboards that have no key, good quality
D**D
Good quality lock and perfect for my application.
I**N
Perfect for my garden shed as it has a long shackle and the sliding doors are always difficult to close. The long shackle makes the final closure easier. Very good lock. Would buy again
Trustpilot
2 weeks ago
1 month ago